Guys, sometimes I find myself in a situation where I have to park far, walk to the beach a quarter mile with the board and a sail and would love to take a few extra small fins (thrusters/bites/wave) with me to make some adjustments or take a tiny bottle of water and maybe a small screwdriver and cell phone and not leave these on the beach.

Some first thoughts I have is to get a flattish waist bag and attach it to the back of the harness.

Wonder if any found a nice way to deal with it? Would be nice to have a small wrap around bag which can go flat against the back of a harness.. Made some silly mockup.

Dakine Classic hip pack? www.dakine.com/collections/backpack-hip-packs.

Could have the pack straps vertical around the harness back support?

What about a small CamelBak style thing?

Hey leto. Ive been trialing the Seacure hard plastic bum bag. Works great. Holds my back up phone, BT 31 GPS, spar keys, tools. Good O ring and aqua seal has so far stopped water egress. I use 2 elastic loops with balls on the ends to attach to harness and use the waist belt as a back up.

Nice.
I also checked my RideEngine harness and there are 2 hidden steel rings on the sides I can use to attach the bag. So no need to hook it over the top and the bottom (awesome).

I'm thinking more about a neoprene bag similar size as it stretches. So things don't bang inside that bag when I jump plus it weighs close to nothing when empty. Also a small water bottle compartment can be awesome to hold say one tiny 240ml spring water bottle.
A month ago I had to finish one of my sessions early because i was thirsty and walking to the car and back in one of the spots would take half an hour.

Keys and a small aluminum uphaul stick are not a problem though as I wear them around my neck.

I use a hydration pack for water, it has a side pocket that you can put a pocket knife, Small screw driver etc... I also carry a dry pack for my cell phone, which has enough room for my car key and alarm. I tie the hydration pack too my wetsuit zipper cord and slip it inside my wetsuit. When I'm in board shorts, I just slip the drypack line through my harness leg strap and put it inside my boardshorts pocket

Whatever happened to the days we just wore boardies, says me with an Avatar of me in a spring-suit, impact vest, sun hat, booties and gloves

yeti fanny pack, waterproof and adds buoyancy when in the water.